Automatic stop



Aug. 26,A 1930. v. ANDERSON AUTOMATIC STOP Filed Nov. 14 1927 s sheets-sheet 2 Aug. ze, 1930. v.- ANDERSON 1,774,220

AUTOMATIC STOP' Filed Nov. v14, 1927 3 Sheets-Sheet 5 1 ENToR.

' vent reverse movement' ofla rotating element, such as` a shaft, when Patented Aug. 26, 1930 & G0., F WEST NEW f UNI-TED Y v10/roe ANnnRso'N.-or-Non'rnnnneiinf, NEW Y YORK, NEW-JERSEY, A oonronA'rIoN orrnnwy JERSEY PATENT LQFFICE JERSEY, kAssienon To ALrnnnHonMANN 1 AUTOMATIC s'ror fAppi-i'caadn med November L14, 1927.

This invention relates'toimprovements i Fig. 'isa view similar toFig. 1, butrsh'owy ing the parts in the 'position they voccupy automatic 4stops and contemplates the; provision of a device which will effectually preofthe same has, been arrested. Y

lMy invention is directed particularly to a stop back-lash'fof the l erally instantaneousA and practically abso-v lute, -it-v has been found that-,because of the arrangement ofthe parts, a torsionalst-rain is-imparted to theshaftf with the result thatl the shaft becomes twistedto suchan extent that it is in danger of?breakimgv v ,j ect of this in.

It is therefore a primary1 o' i vention to provide a stop in which the parts.

are so arranged'th'at the* braking force will be instantaneously applied' at two diametrica'lly opposite points-vy ofthe. shaft,thereby 'y strain which otherrelieving theshaftof 'any wise would 'beimposed upon it and, at the same time, insuring'more effective prevention of-back-lashy or reverserotation.`

It is a further' object ofthe invention to provideV a stopof this character `witharbitrarily actuated means for rendering the mechanism inoperativeso that the shaftrmay f to be construed as limiting i of my stop in be rotated lin reverse direction atvwill.

Other objects and advantages will in part be obvious and in part more fully brought out as the description of the invention pro-V ceeds. i In the accompanying drawings, I havei'llustrated an embodiment of the invention;

but it is to be understood that the drawings Y 4and arein yno way the invention to` the details of construction,V therein shown.k

In these drawings: w Fig. 1 is afront (view,

are illustrative, merely,

showing theparts 1 the'shaft is rotating in the direction ofthe arrow on the shaft; Y

Fig. 2 isa side elevation, Y' y i f,

the normal movement which will prevent reverse rotation or drive shaft of knitting ma;

w' chines, where such reverse rotation would re-v ment Vbeing great-ly-v exaggerated.

, shaft.

Von a. stationary part of the vmachine and 'this plate is pivote'd a bracket 8,- thelpivot `the plate.

the position tney occupy when" seriai No, 233,185...

ofthe means for arbitrarily rendering the stop` inoperative ;y and ,Figf is an enlarged illustrating, in full lines, the position of the parts as in Fig. 1,y and., in dottedv lines, their positionl as in `Fig.` 3, the amount of move;

Referring now tov the drawings,

supportedin bearings, one, of@ which `is shown diagrammatic' view'V therefi erence-numeral 1 indicates a 'shaft suitably at-Q. Mounted upon the shaft is avdisk 3 provided with a hub or. collar- 4 throughl which'p'asses'a securing' bolt 5 bymeans-'of which the disk is rigidlyv connected 'tothe vThe disk isl provided with a peri-pheral liiange 6' which formsy with the side of n y the disk an annular recess.

f An attaching plateg' is-'suitablysupported connection being formed by `a' bolt 9 preferv ably, provided with a bushing 10.V Thezupbracket 8 is provided..v with a per end of the large enough yoke', the opening oflwhichy is withou'tcontacting therewith. An annular plate end ofthe-bracket 8 as by screws vplate issprovidedwithy a. centrally disposed aperture 13 of diameter-slightly greater than to permit ofthe freepassage of the shaftrlvnse 11 is lsecured tothe yoke-A: i p f 12. Thisl that' ofthev shaftl sc that the'shaft'maypass freely therethrough without-contacting with will behoused completely within the annular f recess formed by the fiange 6 and the side ofthe disk clearance. A i f .K

The .platell isv'cut out as, at 14, the; cut extending inwardly from thek periphery of the plate, andthis "cut-out forms.v with; the

The plate 1s so supported that it I 'Y 3` and fits therein withla slight: Y'

.flange' a pocl'etV 1,5 Vof a width decreasing ink a kdirection oppositeto the .direction kolf non A* mal `rotation ofthe shaft. i this pocket a rollery "16k Pivoted on the bracket a hand-lever 1cty f rendered inoperative rto. raise theV roller into the widerend of the secured thereto andliiafving al :peripheral provided with a pin 18 extending into the pocket. The purpose of the lever is to raise the roller 16 to the upper, or wider, end of the pocket when it is desired to rotate the shaft in reverse direction. The hand-lever ismaintained by friction at any position to which it may be moved. e

' In operation, when the shaft is rotating in the direction of the arrow in Fig. l, the'roller will remain at the upper, or wider, end of the pocket, asis Well understood. This position is shown in full lines in Fig. 6. When the rotation `of the shaft is arrested, the roller will drop by gravity to the lower, or nar` rower,'end of the pocket. It there is now any tendency for the shaft to rotate yin a reverse. direction, the roller f will be `instantly wedged into the narrow endof the pocket n and Will beforced tightly against the flange G at the point A indicated in Figs. 3 and. At` the same time, the plate ll will, by reason of its pivotal mounting,.swing left thus contacting with the flange 6 atthe point B indicatedV in Figs and 6.

It willnow be seen that Contact ismade with the flangeG ofthe disk 3 at two diametrically opposite points at the same instant, thus effecting a more positive locking of the shaft than in devices heretofore proposed. 30-

,It Will'also be clear that by this arrangement the shaft isrelieved of any torsional strain which might otherwise be, imparted to it.

As heretofore described, the stop may be by moving the lever 17 pocket whereupon Ythe shaft may be rotated in reverse direction at will. f 4 Y It is obvious that my'invention is susceptible of embodiment informs other than tl at herein described without departing from the spirit and scope of the invention as dcfined in the following. claims. Y

`lVhatI claim is: l. In an automatic stop, vthe `combination of a vrotatalile shaft, a .recessed disk rigidly flange, a movable plate supported within the recess of the'disk and formingwith the pe-V ripheral flange a pocket of decreasing' width,

Vand a roller'within,said pocket.k j 2..'In an automatic stop, the combiiuitionY of'a rotatable shaft, a disk rigidly secured thereto' and having a peripheral flange, a pivotally vmounted bracket provided with a plate having aout-out portion forming with said flange a pocket of decreasing Width, and a roller in saidpocket. Y

In an automatic stop,`the combination of arotatable shaft, a disk rigidly secured theretoand havinga peripheral flange formingfwith the sideof the `disk an annular recess, aipivotally mounted bracket provided.

looselyy insaid Y, yrecess, saidfuplate having a vcut-out portion with an annular plate seating pocket of slightly to the wviclth of the pocket forming with said fiange a pocket of decreasing width, and a roller in said pocket.

4. In an automatic stop, the combination of a rotatable shaft, a disk rigidly secured thereto and having a peripheral flange, an apertured movable plate supported within said fiange and vhaving a cut-out portion forming with flange a pocket of decreasing width, said shaft passing freely through the aperture in said plate, and a roller in said diameter greater than the width of the pocket at one end, and less than the widthiof the pocket at the other end. 5. In an automatic stop, the combination of a rotatable shaft, a disk rigidly secured thereto and having a peripheral flange, an apertured movable plate supported within Asaid flange and having a vcut-out portion forming with they flange a pocket of decreasing Width, said shaft passing freel 7 through the aperture in said plate, a roller in said pocket of diameter ygreater than the width of the pocket at one at the other end, and means to maintain the roller in the wider end of the pocket. f

6. In an automatic stop, the combination of a rotatable shaft,.a disk rigidly secured thereto and having a peripheral fiange, a pivotally mounted apertured plate supported within saidflange and having a cut-out portion forming with the flange a pocket de creasing in Width in a direction opposite to the direction of normal rotation of said shaft, and a roller in said pocket of diameter greater than the width of the pocket at one end and less than the width'of the pocket at the other end, the roller remaining in the wider end of the' pocket'during normal rotation of the shaft and being wedged into the narrower end of the Ypocket upon reverse rotation of the shaft, :thereby moving the plvoted plate into contact with the peripheral flange at a point diametrically opposite-to the point of contact of the roller with said flange.

Intestimony wherof I affix my signature.

VICTOR ANDE SON;

end, and less than the 

